*{
    margin: 0;
    padding: 0;
}
body{
    font-family: 微软雅黑;
}


.main_content{
    position: relative;
    top:10px;
    width: 1150px;
    height: 446px;
    margin: 0 auto;
    border-radius: 5px;
    box-shadow: 0 12px 24px 0 rgba(7,17,27,.2);
}
.nav_div{
    position: relative;
    width: 218px;
    height: inherit;
    float: left;
    border-bottom-left-radius:5px ;
    border-top-left-radius:5px ;
    background-color: #292929;
}
.nav{
    width: 218px;
    height: inherit;
    margin-top: 6px;
}

.nav li{
    width: 218px;
    height: 62px;
    line-height: 62px;
    font-size: larger;
    list-style: none;
}
.nav li .child_menu{
    position: absolute;
    left: 218px;
    top:0;
    width: 932px;
    height: 446px;
    background-color: red;
    z-index: 1;
    display: none;
}
.nav span:hover{
    background: rgba(166, 163, 165, 0.47);
    color: #ffffff;
}

.nav a{
    text-decoration: none;
    color: inherit;
}
.nav span{
    display: block;
    width: 178px;
    height: inherit;
    margin-left: 12px;
    border-bottom-left-radius:5px ;
    border-top-left-radius:5px ;
    padding: 0 14px;
    color: rgba(199, 197, 199, 0.52);
}
.nav a:hover{
    color: #ffffff;
    display: block;
}

.carousel{
    position: relative;
    width: inherit;
    float: left;
    height: inherit;
    margin-top: -2px;
}
.carousel .carousel_ul{
    width: inherit;
    height: inherit;
    list-style: none;
}
.carousel .carousel_ul li{
    position: absolute;

    width: inherit;
    height: inherit;
    display: none;
}
.carousel img{
    display: block;
    width: inherit;
    height: inherit;
}
.circle{
    position: absolute;
    margin: 0 auto;
    width: 72px;
    height: 6px;
    top: 400px;
    left: 534px;
    list-style: none;
}
.circle li{
    width: 6px;
    height: 6px;
    border-radius: 3px;
    background-color: #000000;
    margin: 0 3px;
    float: left;

}

.types-title{
    position: relative;
    font-size: 18px;
    color: #93999F;
    letter-spacing: 0.6px;
    line-height: 36px;
    text-align: center;
}
.container-type{
    width: 1152px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    padding: 36px 0 48px;
}

.filter-item-wrap {
    display: table-cell;
    padding-left: 60px;
}
.filter-item {
    float: left;
    font-size: 16px;
    margin-right: 50px;
    margin-bottom: 24px;
    cursor: pointer;
    position: relative;
}
.filter-item:hover {
    color: #23b8ff;
}
ul, ol, li, dl, dd {
    margin: 0;
    padding: 0;
}
ol, ul {
    list-style: none outside none;
}
.filter-item.current {
    color: #23b8ff;
}

.course-wrap {
    width: inherit;
}

.course-card-list {
    height: 200px;
}
.course-item{
    float: left;
    width: 210px;
    height: 200px;
    padding: 7px 7px 10px;
    border: 1px solid transparent;
    position: relative;

}
.course-item .item-img-link {
    position: relative;
    display: block;
    margin-bottom: 6px;
}

.course-item .item-img-link .item-img {
    width: 220px;
    height: 124px;
}

.item-tt {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    height: 40px;
    font-size: 14px;
    margin-bottom: 8px;
    position: relative;

}
.item-tt-link{
    text-decoration: none;
    background: transparent;
    color: #000000;
    -webkit-tap-highlight-color: transparent;
    font-size: 14px;
}
.footer .container{
    width: 50%;
    float: left;
    margin: 0;
}
.footer .footer-wrap{
    width: 50%;
    float: right;
}

.hgsf-logo-img {
    width: 350px;
}
.learn-btn{
    width: 256px;
    height: 48px;
}
.learn-btn a {
    display: block;
    background-color: red;
}
.learn-btn a:hover {
    display: block;
    background-color: #a10000;
}
.moco-btn-red:link, .moco-btn-red:visited {
    color: #fff;
}
.moco-btn-red {
    border-style: solid;
    border-width: 1px;
    cursor: pointer;
    -weibkit-transition: all .3s;
    -moz-transition: all .3s;
    transition: all .3s;
    color: #fff;
    background-color: #f20d0d;
    border-color: #f20d0d;
    opacity: 1;
}
.moco-btn {
    position: relative;
    display: inline-block;
    margin-bottom: 0;
    text-align: center;
    vertical-align: middle;
    touch-action: manipulation;
    text-decoration: none;
    box-sizing: border-box;
    background-image: none;
    border-radius: 0;
    -webkit-appearance: none;
    white-space: nowrap;
    outline: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    border-style: solid;
    border-width: 1px;
    cursor: pointer;
    -weibkit-transition: all .3s;
    -moz-transition: all .3s;
    transition: all .3s;
    color: #545c63;
    background-color: transparent;
    border-color: #9199a1;
    opacity: 1;
    padding: 7px 16px;
    font-size: 14px;
    line-height: 1.42857143;
    border-radius: 18px;
}